Energy distributions from three-body decaying many-body resonances

Abstract

We compute energy distributions of three particles emerging from decaying many-body resonances. We reproduce the measured energy distributions from decays of two archetypal states chosen as the lowest $0^{+}$ and $1^{+}$-resonances in ${}^{12}$C populated in $\beta$-decays. These states are dominated by sequential, through the ${}^8$Be ground state, and direct decays, respectively. These decay mechanisms are reflected in the ``dynamic'' evolution from small, cluster or shell-model states, to large distances, where the coordinate or momentum space continuum wavefunctions are accurately computed.

4 pages, 4 figures. Accepted for publication in Physical Review Letters

References in corpus (1)

• Structure of low-lying 12C-resonances

Cited by in corpus (10)

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• Momentum distributions of $\alpha$-particles from decaying low-lying ${}^{12}$C-resonances
• Necessary conditions for accurate computations of three-body partial decay widths
• Triple charged-particle decays of resonances illustrated by 12C-states
• Decay of low-lying 12C resonances within a 3alpha cluster model
• alpha particle momentum distributions from 12C decaying resonances
• Few-body decay and recombination in nuclear astrophysics
• 4-momentum conservation as the principal framework for mesonic decay: The case of helium-5-lambda
• Fusion and reactions of $\alpha$+${}^8$Be in the Hoyle resonance and associated resonances region